html,body{
    height: 100%;
    width: 100%;
    overflow: hidden;
    /* 解决盒子塌陷 */
}
body{
    background: url(../images/login_bg.jpg) no-repeat;
    background-size: cover;
}
#logo{
    margin: 20px 0 0 240px;
}
.box{
    width: 400px;
    height: 310px;
    background-color: #fff;
    position: absolute;
    left: 50%;
    top: 50%;
    transform: translate(-50%,-50%);
}
/* 默认注册的盒子隐藏 */
.register{
display: none;
}
.box_title{
    height: 60px;
    background: url(../images/login_title.png) no-repeat center;
}
.layui-form{
    margin: 0 30px;
}
.box a{
    float: right;
}
/* 字体图标****** */
.layui-form-item{
    position: relative;
}
.layui-icon{
    position: absolute;
    left: 2px;
    top: 10px;
}
.layui-input{
    padding-left: 30px;
}